Discover Yellowstone National Park, the geological crown jewel of the United States, home to the famous Grand Prismatic ...

The Midway Geyser Basin's Grand Prismatic Spring is the largest hot spring in Yellowstone and one of the largest hot springs in the world. Measuring approximately 370 feet in size and around 121 ...

This Yellowstone National Park one day itinerary takes you to all the park's highlights including Old Faithful and Grand ...

How the Grand Prismatic Spring Gets Its Kaleidoscopic Colors The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic Spring—the largest hot spring in the U.S.

Yellowstone is a great refuge not just ... drip by drip. The colors of Grand Prismatic Spring come from thermophiles: microbes that thrive in scalding water. The green is chlorophyll they use ...